This Keyboard Tray/Monitor Shelf enables you to keep your keyboard, monitor, and mouse within a two-post 19" rack for easier troubleshooting and maintenance. It mounts to the front and back surfaces of both standard 7.62-cm rails in a two-post open frame rack.The cantilevered monitor shelf extends 26.7 cm beyond the front of the rack and is 33.8-cm deep. The keyboard tray slides out an additional 17&npsp;cm and holds a full-size keyboard. A slide-out mouse tray is attached to the keyboard tray.